Magic User Interface (MUI) was an advanced GUI library with fully resizable layout and advanced theming. Similar features came to Windows and MacOS several years later.
You could use MUI for free, but customizing the appearance required paying a shareware fee (or a crack).
I registered MUI and many other shareware tools even when I was still a student because I believed in supporting the ecosystem of freelance Amiga developers :amiga:
Directory Opus, an awesome file manager, progressed from shareware to boxed commercial software. The author was Jonathan Potter, an Australian developer.
Directory Opus 5 could fully replace the old and slow Workbench interface.
@codewiz never could get used to v5, while I loved the previous releases with their dual pane and buttons on the bottom. Still using that version, and it has been open sourced several years back.
@sleuthgames But I was strictly referring to the Workbench file management interface: slow at loading icons one at a time, no docks to launch apps, blocking file copying, limited options for selecting files... This is why alternative file managers were created.
@codewiz Workbench 2.0+ was never old and slow. It was the best OS I ever use. It was easy to customize in any aspect with tons of Arexx, freeware and shareware. Just need an hardrive and some Fast ram. DirOpus was a nice software but it's just a specific way to customize the Amiga experience.